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Ten thin copper squares 20 by 20 by .5 mm in a stack

EN-Labs

EN-Labs DIY Copper Shim Heatsink 20x20x0.5mm 10pcs

SKU CH-5MMV-97H65

Pack of ten 20×20×0.5 mm copper shims rated at 401 W/mK for CPU, GPU, RAM and BGA chip cooling in laptops and consoles

  • Compatible withCPU
  • Main materialCopper
  • Key featuresThis Copper Shims thermal conductivity up to 401w / mk, and
  • Product dimensions20 mm × 20 mm × 0.5 mm
  • Thermal conductivity up to 401 W/mK for efficient heat transfer
  • 5 mm slim profile fits tight laptop and console gaps
  • 20 x 20 mm square covers common BGA CPU and GPU chips
  • 10 shims per pack support multiple repairs or upgrades
  • Copper construction resists aging better than thermal plastic pads

Copper shims for BGA chip cooling

These 20 mm square copper shims measure 0.5 mm thick and come in a pack of 10. They are intended for DIY thermal management on laptop CPUs, GPUs and memory chips as well as on Xbox 360, PlayStation 2, 3 and 4 consoles.

Thermal capacity and limits

Each shim offers a rated thermal conductivity of 401 W/m·K, far above the 20 to 30 W/m·K of ordinary copper, so it moves heat quickly from a BGA die to a heatsink. The 0.5 mm thickness provides a thin, compliant interface but cannot replace a full heatsink assembly for sustained high-power loads.

Build integration

The shims sit directly on bare die surfaces and require a mounting solution that maintains even pressure without damaging the package. They free the builder from relying on aged thermal paste or pads that degrade over time, yet they need a separate cooler or heat spreader to dissipate the transferred heat.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 90% of the 609 comparable items (median $15.99).

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Specifications

Size & build
Main materialCopper
Product dimensions20 mm × 20 mm × 0.5 mm
Compatibility
Compatible withCPU

Questions about this item

Will the 0.5 mm copper shims fit between my laptop CPU die and the original heatsink without changing the mounting pressure?

Each shim measures 20 mm by 20 mm by 0.5 mm, so it adds only half a millimetre of height; verify your cooler’s spring tension can accommodate that extra gap before installing.

How can I confirm the shims are transferring heat effectively after I install them?

Monitor CPU or GPU temperatures under load; a noticeable drop compared with the previous thermal pad indicates the 401 W/m·K copper is conducting heat into the heatsink as intended.

Does the pack of 10 shims include thermal paste or adhesive, or must I buy those separately?

The lot contains only the ten copper shims; thermal compound or adhesive tape is not included and must be purchased separately.

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